I need to replace my rotary washing line and wondered if anyone can help with some easy advice! Always relied on husband before but due to illness I now need to take over those little jobs we never got round to doing! I presume if the new rotary base (metal tube) is not the same size as the old one that I will need to break up the existing concrete. Then prepare some ready mixed concrete. But what I am not sure about is how do I ensure that the base (metal tube) stays upright while the concrete is drying? I now the question is rather pathetic but any useful tips would be gratefully appreciated!

If the new dryer doesn't fit the ground spike then yes you will need to either dig up the old one or move the dryer elsewhere.

If you use something like postfix then level the ground spike with the dryer in, then carefully remove it before watering in. The spike shouldn't move about that much. You could also check the level as its drying and make any slight corrections before it fully sets.